A 3-level asynchronous protocol for a differential two-wire communication link

摘要

A differential two-wire communication link with a 3-level asynchronous protocol is introduced. The proposed 3-level code contains information of both data and clock. Since only one edge is needed for each bit, the bandwidth of a link is efficiently utilized. The power consumption is reduced by the low-swing differential two-wire link and is further reduced by a 3-level code. The speed of the protocol is expected to reach 1 Gb/s in a 1.2-/spl mu/m CMOS process.